/**
  ******************************************************************************
  * @file    usb_bsp.c
  * @author  MCD Application Team
  * @version V1.1.0
  * @date    19-March-2012
  * @brief   This file is responsible to offer board support package and is 
  *          configurable by user.
  ******************************************************************************
  * @attention
  *
  * <h2><center>&copy; COPYRIGHT 2012 STMicroelectronics</center></h2>
  *
  * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
  * You may not use this file except in compliance with the License.
  * You may obtain a copy of the License at:
  *
  *        http://www.st.com/software_license_agreement_liberty_v2
  *
  * Unless required by applicable law or agreed to in writing, software 
  * distributed under the License is distributed on an "AS IS" BASIS, 
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  *
  ******************************************************************************
  */ 

#include "usb_bsp.h"
#include "usbd_conf.h"

#include "misc.h"
#include "stm32f4xx_exti.h"
#include "stm32f4xx_gpio.h"
#include "stm32f4xx_rcc.h"

/**
* @brief  USB_OTG_BSP_EnableInterrupt
*         Enabele USB Global interrupt
* @param  None
* @retval None
*/
void USB_OTG_BSP_Init(USB_OTG_CORE_HANDLE *pdev)
{
	GPIO_InitTypeDef GPIO_InitStructure;

	RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_GPIOA , ENABLE);

	/* Configure SOF VBUS ID DM DP Pins */
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8  |
	GPIO_Pin_9  |
	  GPIO_Pin_11 |
		GPIO_Pin_12;

	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
	GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
	GPIO_Init(GPIOA, &GPIO_InitStructure);

	GPIO_PinAFConfig(GPIOA,GPIO_PinSource8,GPIO_AF_OTG1_FS) ;
	GPIO_PinAFConfig(GPIOA,GPIO_PinSource9,GPIO_AF_OTG1_FS) ;
	GPIO_PinAFConfig(GPIOA,GPIO_PinSource11,GPIO_AF_OTG1_FS) ;
	GPIO_PinAFConfig(GPIOA,GPIO_PinSource12,GPIO_AF_OTG1_FS) ;

	/* this for ID line debug */
	GPIO_InitStructure.GPIO_Pin =  GPIO_Pin_10;
	GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
	GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP ;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
	GPIO_Init(GPIOA, &GPIO_InitStructure);
	GPIO_PinAFConfig(GPIOA,GPIO_PinSource10,GPIO_AF_OTG1_FS) ;

	RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
	RCC_AHB2PeriphClockCmd(RCC_AHB2Periph_OTG_FS, ENABLE) ;
}

/**
* @brief  USB_OTG_BSP_EnableInterrupt
*         Enabele USB Global interrupt
* @param  None
* @retval None
*/
void USB_OTG_BSP_EnableInterrupt(USB_OTG_CORE_HANDLE *pdev)
{
	NVIC_InitTypeDef NVIC_InitStructure;

	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
	NVIC_InitStructure.NVIC_IRQChannel = OTG_FS_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	NVIC_Init(&NVIC_InitStructure);
}

/**
* @brief  USB_OTG_BSP_uDelay
*         This function provides delay time in micro sec
* @param  usec : Value of delay required in micro sec
* @retval None
*/
void USB_OTG_BSP_uDelay (const uint32_t usec)
{
	uint32_t count = 0;
	const uint32_t utime = (120 * usec / 7);
	do
	{
		if ( ++count > utime )
		{
			return ;
		}
	}
	while (1);
}


/**
* @brief  USB_OTG_BSP_mDelay
*          This function provides delay time in milli sec
* @param  msec : Value of delay required in milli sec
* @retval None
*/
void USB_OTG_BSP_mDelay (const uint32_t msec)
{
	USB_OTG_BSP_uDelay(msec * 1000);
}

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
